Fitting for electrical conduits.



K. SIXIVIA.

FITTING FOR ELECTRICAL CONDUITS. APPLICATION FILED MAY 5, I9I4.

Patented June 12, 1917.

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KLAS SIXMAQOF BROOKLYN, NEW YORK.

FITTING FOR ELECTRICAL CONDITS.

Specification of Letters Patent.

Patented June 12, 1917.'.

Application filed` May 5, 1914.. Serial No. 836,451.

Taal] whom it may concern.' l

Be it known that I, KLAAs SIXMA, a subject of thev Queen of. the Netherlands, residing at Brooklyn, in the county of Kings and State of New York, have invented new and' useful Improvements in Fittings for Electrical Conduits,.of which the following is a specification.

The present invention relates to improvements in that class of fittings' for electrical in two halves,`with extending lugs and bolted y ogether with screws or bolts, through these use The object of the present invention is to provide a conduit fitting with an externally threaded bushing, which may be used with or without internal threads to coact with threads on the conduit.

And another object of the invention is to provide a conduit tting whereby it will be possible to connect conduits that are not threaded. Y

Still another object of the invention is to provide a conduit fitting with outward eX- tending tapered nipples, which are held together with tapering lock nuts, and is capable to be easily put together and vtaken apart in caseof repairs. These ittings may also be used as a substitutev for a pull-box aswell as a connector for open wiring.

These fittings can be made into any desired shape and size, such as Ts, crosses, elbows, couplings, fuseboXes or any other shape as the trademay require.

The invention consists of novel features and parts, and combinations of-same, which will be more fully described hereinafter and' can be used as a pull-box, with insulating material held in position for outside wiring. Fig. 4 is a section on line wof Fig. 3. Fig. 5 is a fragmentary sectional elevation of a modified form of the fitting, showing a conduit without threads connected thereto, and

Fig. 6 is a side elevation of a fuse boX connected to conduits.

Referring. to Fig. 1y of the drawings it will be seen that the vconduit fitting A is made in the shape of a reducing 1' and may be made of any suitable material, such as cast or pressed metals or fiber and is made in'two halves 10-11, which are made identical with each otherf The outer ends of the V'll'pare made somewhat contracted, thereby forming inside shoulders 12 and terminating with tapering-nipples 13.

`Over the threaded ends ofthe conduits 111 are screwed bushings 15. These bushings have at their inner ends inwardly extending rounded rims 16 which form stops for` the conduits 14 and serve as protection for the wires, also outwardly extending angular shoulders 17 which coact with shoulders 12 of the conduit fitting A.

The'outer ends of bushings 15 are threaded toA receive locknuts 18 whichhave inside tapering portionsk 19 `which coact with tapered nipples 13 of the body sections 10-11.

It will now be'secn that when assemblin The loclmuts 18 are first slipped over t conduits. rlhe bushings 15 are then screwed home on `their respectlve conduits 14;. A The fitting members 10--11 are now placed over these bushings. The' shoulders .17 of the bushings 15 will bear against the inside shoulder 12 of the fitting members 10-11 and are held there by hand until locknuts 18 are screwed against the taperin nipples 13 of the fitting members 10-11, w ich will force the main portions 10-11 together and hold them secure and it will be impossible to jar them loose. Y

.s These fittings may be provided with the' object of this construction is when the couiet main in fixed position. The insulating plate 24 with groove 25 into which the fitting members 10-11 t, may be provided with any required number of holes 26 for the reception of Wires to `be used.

As indicated inFig. 5, by mounting a split ring 28 on the end of the conduit for engagement With the bushing 27, the threads on the conduit ca'n be omitted. The bushing 27 has at its inner end an internal conical thread into which is screwed a split ring or bushing 28 Which has an external conical thread. This ring 28 has an inwardly eX- tending annular rounded rim 29, Which forms a stop for the conduit, and serves as protection for Wires from the sharp edge of l the conduit.

In assembling, the locknut 18 is first slipped over the conduit 14. The split ring 28 is partly screwed into the bushing 27, and then slipped over the end of the conduit 14. The bushing 27 is now screwed onto the ring 28 until it Grips the conduit 14 and holds it securely. 'Ihe Whole is then assembled as before described. y

Fig.l 6 illustrates a fuse-box 29 connected to conduits 14. The connection is made same as before described.

I claim 1. In a conduit tting of the kind described the combination With a sectional body providedvvith a tubular tapered nipple, a conduit fitted in the nipple, a threaded bushing to engage the conduit, and a lock nut mounted on the' threads of the bushing and coacting With the tapered portion of the nipple.

2. In a conduit fitting of the kind described the combination With a sectional body provided With a tubular tapered nipple, a threaded conduit fitted in the nipple, a threaded bushing to engage the threads of the conduit, a lock nut to engage the threads of the bushing and coact With the tapered portion of the nipple.

3. Ina conduit fitting of the kind described the combination With a sectional body provided With atubular tapered nipple, a threaded conduit tted in the nipple, a bushing -having exterior and interior threads the latter for engagement lWith the .threads of the conduit, a lock nut to engage the exterior threads of the bushing and coact with the tapered' portion of the nipple.

In testimonyewhereof I have hereunto set my hand in the presence of two subscribing Witnesses.

KLAAS SIXMA. Witnesses:

JOHN A. BERGSTROM, CHRISTIAN II. OLMSTAEDT. 

